Reorder the words and phrases to make meaningful sentences:
1. complex similarities / He / studies / between / humans / and differences / and animals/ the
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2. Some / native habitat / are / in / because / animals / their / is / danger / destroyed / being 
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3. gone beyond / global warming / the point / no return / Scientists / that / has / of / fear
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4. Most people / endangered animals / accept / have / that / we / a / to protect / the proposition / duty
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Reorder the words and phrases to make meaningful sentences:
1. needs / More money / in / to / invested / greener / fuel sources / be / developing
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2. sustain / she / her job / they / could / When / no longer / their / expensive lifestyle / lost
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3. the pressures / modern life / of / relax  / The national park / is / ideal place / an / to / and escape
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4. been / and visual pollutions / blamed / Heavy industries / for river, soil, / air, noise / have
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